I've had this 3 gallon cube sitting around in my house forever and I randomly got the idea to turn it into a mini tank maybe for hermits and some frags? But I just wanted to see if anyone else had any ideas, or if it's even plausible. The smallest saltwater tank I've ever had is my 29 while the largest being a 75, but since I already check my levels every other day for all my tanks I figured I could handle the upkeep of a very tiny tank. Plus I think it'd just look adorable to have a tiny little tank.
